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The reader is tempted immediately to interpret this as meaning "when the wire is carrying a current," but the "electrical conflict" to which Œrsted attributed the magnetic effect had little to do with the modern concept of electric current. As we shall see below, it is precisely from Œrsted’s experiment that Ampère was led to define "electric current" as a circulation of electrical fluid(s) in a closed circuit.So, there was a direct relationship between electricity and magnetism. This link was sought out by Œrsted who, sensitive to the "romantic" vision of nature then predominant in Germanic countries, long had maintained the unity of physical phenomena. He even had argued the idea that electricity was at the heart of this unity. But in Paris, mathematicians and physicists such as Laplace, Poisson, or Biot were convinced of the complete independence between electricity and magnetism. Certainly Coulomb had shown that electrical and magnetic forces followed laws identical to that of Newton for gravity, these three forces decreasing as the inverse square of the distance. But, there was hardly more reason to believe in a connection between electricity and magnetism than to believe in a magnetic attraction between the Earth and the Moon.Moreover, the revolving character of the observed effect was astonishing. Newtonian forces acting between masses, between electrical charges, or between magnetic poles, are directed along a straight line joining the interacting elements. Œrsted’s experiment did not fit into this framework. If one overcame the magnetic effect of the Earth on the needle, as Ampère soon would achieve, the needle actually turned to be perpendicular to the wire, as if it were driven by a vortex turning around the wire. The vortices that Œrsted evoked harkened back to those that Descartes claimed to explain celestial motions, and these seemed to be a step backward to outdated science. Rare were those physicists who accepted Œrsted’s vortex explanation.
This experiment is fundamental for Ampère’s theory. It is for him the purest manifestation of the effects produced by electricity in motion.But, this interaction between currents was not understood as such by his audience. It looked too much like a new version of the usual electrical attractions. Also, Ampère had to emphasize an essential difference: while similarly electrified bodies repel each other, similar currents (flowing in the same direction) attract each other. In addition, the conductor connected to the battery’s terminals did not carry a discernible charge.
Another thing, you have been wondering how a U shape permanent magnet can keep its normal strength indefinitely. You know the soft iron does not hold magnets, but you already have one that holds it. It is the perpetual motion holder. It illustrates the principle how permanent magnets are made. All that has to be done is to start the magnets to run in on orbit, then they will never stop. Hard steel U shape magnets have a broken orbit, but under proper conditions it is permanent. I think the structure of the metal is the answer. I have two U shape magnets. They look alike, but one is a little harder than the other. The harder one can lift three pounds more than the softer one. I have been tempering the other steel magnets, and have noticed that the harder the steel gets the smaller it becomes. That shows that the metal is more packed and has less holes in it so the magnets cannot pass through it in full speed, so they dam up in the prong ends. They come in faster than they can get out. I think the ability for the soft steel welding rod to hold magnets is in the metal's fine structure.
Now about the sphere magnet. If you have a strong magnet you can change the poles in the sphere in any side you want or take the poles out so the sphere will not be a magnet any more. From this you can see that the magnet can be shifted and concentrated and also you can see that the metal is not the real magnet. The real magnet is the substance that is circulating in the metal. Each particle in the substance is an individual magnet by itself, and both North and South Pole individual magnets. They are so small that they can pass through anything.. In fact they can pass through metal easier than through the air. They are in constant motion, they are running one kind of magnets against the other kind, and if guided in the right channels they possess perpetual power. The North and South Pole magnets they are cosmic force, they hold together this earth and everything on it. Each North and South Pole magnet is equal in strength, but the strength of each individual magnet doesn't amount to anything. To be of practical use they will have to be in great numbers.